don't I tinker? don't you tinker? doesn't he tinker? don't we tinker? don't you tinker? don't they tinker?
Present continuous
am I not tinkering? aren't you tinkering? isn't he tinkering? aren't we tinkering? aren't you tinkering? aren't they tinkering?
Preterite
didn't I tinker? didn't you tinker? didn't he tinker? didn't we tinker? didn't you tinker? didn't they tinker?
Preterite continuous
wasn't I tinkering? weren't you tinkering? wasn't he tinkering? weren't we tinkering? weren't you tinkering? weren't they tinkering?
Present perfect
haven't I tinkered? haven't you tinkered? hasn't he tinkered? haven't we tinkered? haven't you tinkered? haven't they tinkered?
Present perfect continuous
haven't I been tinkering? haven't you been tinkering? hasn't he been tinkering? haven't we been tinkering? haven't you been tinkering? haven't they been tinkering?
Pluperfect
hadn't I tinkered? hadn't you tinkered? hadn't he tinkered? hadn't we tinkered? hadn't you tinkered? hadn't they tinkered?
Pluperfect continuous
hadn't I been tinkering? hadn't you been tinkering? hadn't he been tinkering? hadn't we been tinkering? hadn't you been tinkering? hadn't they been tinkering?
Future
won't I tinker? won't you tinker? won't he tinker? won't we tinker? won't you tinker? won't they tinker?
Future continuous
won't I be tinkering? won't you be tinkering? won't he be tinkering? won't we be tinkering? won't you be tinkering? won't they be tinkering?
Future perfect
won't I have tinkered? won't you have tinkered? won't he have tinkered? won't we have tinkered? won't you have tinkered? won't they have tinkered?
Future perfect continuous
won't I have been tinkering? won't you have been tinkering? won't he have been tinkering? won't we have been tinkering? won't you have been tinkering? won't they have been tinkering?
Conditional
Present
wouldn't I tinker? wouldn't you tinker? wouldn't he tinker? wouldn't we tinker? wouldn't you tinker? wouldn't they tinker?
Present continuous
wouldn't I be tinkering? wouldn't you be tinkering? wouldn't he be tinkering? wouldn't we be tinkering? wouldn't you be tinkering? wouldn't they be tinkering?
Past
wouldn't I have tinkered? wouldn't you have tinkered? wouldn't he have tinkered? wouldn't we have tinkered? wouldn't you have tinkered? wouldn't they have tinkered?
Past continuous
wouldn't I have been tinkering? wouldn't you have been tinkering? wouldn't he have been tinkering? wouldn't we have been tinkering? wouldn't you have been tinkering? wouldn't they have been tinkering?